869424191 has 2 divisors, whose sum is σ = 869424192. Its totient is φ = 869424190.

The previous prime is 869424163. The next prime is 869424197. The reversal of 869424191 is 191424968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869424191 - 2¹⁰ = 869423167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869424197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434712095 + 434712096.

It is an arithmetic number, because the mean of its divisors is an integer number (434712096).

Almost surely, 2^869424191 is an apocalyptic number.

869424191 is a deficient number, since it is larger than the sum of its proper divisors (1).

869424191 is an equidigital number, since it uses as much as digits as its factorization.

869424191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 869424191 is about 29485.9999152140. Note that the first 4 decimals coincide. The cubic root of 869424191 is about 954.4296150835.

The spelling of 869424191 in words is "eight hundred sixty-nine million, four hundred twenty-four thousand, one hundred ninety-one".